I did what it said in the Nokes book. It is really handy. Jill Nokes, How to Grow Native Plants of Texas.
All of the seeds float. I assume this is a riprarian dispersal technique. It is a resinous coating that keeps water out and them floating. Nokes recommended soaking in near boiling water. No sir, out of 250 seeds, I got none. Yup, NONE.
Instead I went in April and dug up about 30 of the little guys on the banks of the Colorado. They grow fast.
Now I am starting a few live oaks and am going to try to grow a lot of lacey oaks if I don't miss seed drop.
It entertains me, keeps me from littering Asite, and keeps the squirrels fed.
I forgot, with the taxodium, all of that was after a stratification period.